Slide valve



FIG. 1 is a perspective view of a slide valve in accordance with my invention;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is an end view from one end thereof; and,

FIG. 7 is an end view from the opposite end thereof. 

The ornamental design for a slide valve, as shown and described. 